Approved Methods
International standards exist to enable an interconnected world. By creating and adhering to standards, a global confidence is built. The international language of standards allows us to communicate our quality in a way any scientist can understand: with proven, reliable, and repeatable results. LECO is proud to take an active role in the development of and adherence to these international standards.
LECO instruments conform to the approved methodologies for many organizations.
Download the pdf file of these approved methods, or view the methods below:
AACC (American Association of Cereal Chemists)
| Method | Instruments | Constituents | Materials |
| 46-30 | 828/928 Series | Protein | Cereal and Cereal Products |
AOAC International
| Method | Instruments | Constituents | Materials |
| 990.03 | 828/928 Series | Crude Protein | Animal Feed |
| 992.15 | 828/928 Series | Crude Protein | Meat, Meat Products, and Petfoods |
| 992.23 | 828/928 Series | Crude Protein | Cereal Grain and Oil Seed Products |
| 993.13 | 828/928 Series | Nitrogen | Fertilizer |
| 997.09 | 828/928 Series | Nitrogen, Protein | Beer, Wort, and Brewing Grains (Total Protein by Calculation) |
| 2017.08 | S832 Series | Sulfur | Fertilizer |
AOCS (American Oil Chemists’ Society)
| Method | Instruments | Constituents | Materials |
| BA4E-93 | 828/928 Series | Protein | Oil Seeds |
| BA4F-00 | 828/928 Series | Protein | Soybean Meal |
ASBC (American Society of Brewing Chemists)
| Method | Instruments | Constituents | Materials |
| Combustion | 828/928 Series | Protein | Adjunct Materials and Cereals |
| Combustion | 828/928 Series | Protein | Barley |
| Combustion | 828/928 Series | Protein | Beer |
| Combustion | 828/928 Series | Protein | Brewers’ Grains |
| Combustion | 828/928 Series | Protein | Malt |
| Combustion | 828/928 Series | Protein | Wort |
ASTM (American Society for Testing & Materials)
LECO has been involved with ASTM International for over 30 years, with employees serving on committees ranging from cement, to nuclear fuel cycle, to additive manufacturing technologies, to mechanical testing , and more. As with our instruments, we work with ASTM to both push our analytical abilities forward with new methods and rework old methods to keep them up to date with current and cutting-edge technology.
Learn more about LECO’s commitment to ASTM International Standards.
» Carbon Black
| Method | Instruments | Constituents | Materials |
| D1619 | 832 Series | Sulfur | Carbon Black |
| D7633 | 832 Series | Carbon | Carbon Black |
| D7662 | 832 Series | Carbon | Carbon Black Feedstock Oils |
| D7679 | 832 Series | Sulfur | Carbon Black Feedstock Oils |
» Cement
| Method | Instruments | Constituents | Materials |
| C114 Sec 18.1 |
TGA801 | Loss on Ignition (LOI) | Portland Cement |
| C114 Appendix X2.2.2 |
TGA801 | Split Loss on Ignition, Carbon Dioxide | Hydraulic Cement |
| C114 Appendix X2.2.5 |
844/744 Series | Total Carbon, Carbon Dioxide | Hydraulic Cement |
| C311/C311M Sec 11 |
TM800, TGA801 | Moisture | Coal Ash & Natural Pozzolans |
| C311/C311M Sec 11 |
TM800, TGA801 | LOI | Coal Ash & Natural Pozzolans |
» Ceramics
| Method | Instruments | Constituents | Materials |
| C1494-01 | 844/744 Series, 836/736 Series |
Carbon, Oxygen, Nitrogen | Silicon Nitride Powder |
» Energy
| Method | Instruments | Constituents | Materials |
| C1408 | 844/744 Series | Carbon (Total) | Uranium Oxide Powders and Pellets |
| C1457 | H836EN | Hydrogen | Uranium Oxide Powders and Pellets |
| D240 | AC500 | Calorific Value | Hydrocarbon Fuels |
| D1552 | 832 Series | Sulfur | Oils and Petroleum Products |
| D1619 | 832 Series | Sulfur | Carbon Black |
| D1857 | AF700 | Ash Fusion | Coal and Coke Ash |
| D4239/ Mth A |
832 Series | Sulfur | Coal and Coke |
| D4809 | AC500 | Calorific Value | Hydrocarbon Fuels |
| D5016 | 832 Series | Sulfur | Coal and Coke Ash |
| D5291 | 828 Series | Carbon, Hydrogen, Nitrogen | Oil |
| D5373/ Mth A |
828 Series | Carbon, Hydrogen, Nitrogen | Coal |
| D5373/ Mth B |
832 Series | Carbon | Coal and Coke |
| D5769 | Pegasus BT | Total Aromatics | Finished Gasoline |
| D5865 | AC500, AC600 | Calorific Value | Coal and Coke |
| D7348 | TGA701, TGA801 | Loss on Ignition (LOI) | Combustion Residues |
| D7582 | TGA701, TGA801 | Proximate (Moisture, Volatile, and Ash) | Coal and Coke |
| D7582 Sec 13.2.2 |
TGM800 | Moisture | Coal and Coke |
| D8339 | TGA801 | Free Moisture, Gypsum, Calcium Sulfite Hemihydrate, Calcium Carbonate, Ash | Flue Gas Desulfurization Solids (FGD) |
» Hardness Testing
| Method | Instruments | Title |
| E10 | LCB3100 | Standard Test Method for Brinell Hardness of Metallic Materials |
| E18 | LR, LCR | Standard Test Methods for Rockwell Hardness of Metallic Materials |
| E92 | LM, LV, LMV, AMH43, AMH55, Test Blocks |
Standard Test Method for Knoop and Vickers Hardness of Materials |
| E140 | LM, LV, LR, LCR, LMV, LCB3100 |
Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, and Scleroscope Hardness |
» Lime and Limestone
| Method | Instruments | Constituents | Materials |
| C25 Sec 35 | 832 Series | Carbon and Sulfur | Lime, Limestone and Kiln Flue Dust |
» Metals
| Method | Instruments | Constituents | Materials |
| E1019 | 844/744 Series, 836/736 Series |
Carbon, Sulfur, Nitrogen, Oxygen | Steel, Iron*, Nickel/Cobalt Alloys |
| E1409 | 836/736 Series | Oxygen, Nitrogen | Titanium and Titanium Alloys |
| E1447 | 836 Series, H836 EN |
Hydrogen | Titanium and Titanium Alloys |
| E1569 | 836/736 Series | Oxygen | Tantalum |
| E1587 | 844/744 Series, 836/736 Series |
Carbon, Sulfur, Nitrogen, Oxygen | Refined Nickel |
| E1915 | 844/744 Series, 832 Series |
Carbon, Sulfur | Metal Bearing Ores and Related Materials (i.e. tailings, waste rock) |
| E1941 | 844/744 Series | Carbon | Refractory and Reactive Metals |
| E2050 | 844/744 Series, | Carbon | Mold Powders |
| E2575 | 836/736 Series | Oxygen | Copper |
| E2792 | H836EN | Hydrogen | Aluminum and Aluminum Alloys |
| E2994 | GDS | Multiple | Titanium and Titanium Alloys |
* ISO 4935 – Sulfur Method; ISO 9556 – Carbon Method
» Microscopy
| Method | Instruments | Title |
| E1951 | BX, GX, SZ, SZX | Standard Guide for Calibrating Reticles and Light Microscope Magnifications |
AWS (American Welding Society)
| Method | Instruments | Constituents | Materials |
| A4.4M:2001 | 612 Series | Moisture | Welding Fluxes and Electrode Flux Coverings |
EPA (Environmental Protection Agency)
| Method | Instruments | Constituents | Materials |
| 525.2 | Pegasus BT | Organic Compounds | Drinking Water |
| 8270 | Pegasus BT | Semi-volatile Organic Compounds (SVOCs) | Solids, Soil, and Water |
ISO (International Organization for Standardization)
» Energy
| Method | Instruments | Constituents | Materials |
| 1928 | AC500, AC600 | Calorific Value | Solid Mineral Fuels |
| 29541 | 828 Series | Carbon, Hydrogen, Nitrogen | Solid Mineral Fuels |
| 16948 | 828 Series | Carbon, Hydrogen, Nitrogen | Solid Biofuels |
| 18611-2 | 828/928 Series | Nitrogen | Catalyst |
| 18611-2 Annex B |
828/928 Series | Total Nitrogen, Urea | Aqueous Urea Solution |
| 19579 | 832 Series | Sulfur | Solid Mineral Fuels |
| 22241-2 Annex B |
828/928 Series | Total Nitrogen, Urea | Aqueous Urea Solution |
» Food
| Method | Instruments | Constituents | Materials |
| 14891 | 828/928 Series | Total Nitrogen, Protein | Milk and Milk Products |
| 16634 | 828/928 Series | Total Nitrogen, Protein | Food Products, Oilseed, and Animal Feeds |
» Hardness Testing
| Method | Instruments | Title |
| 4545-2 | LM, LMV | Metallic materials — Knoop hardness test — Part 2: Verification and calibration of testing machines |
| 6506-2 | LCB3100 | Metallic materials — Brinell hardness test — Part 2: Verification and calibration of testing machines |
| 6507-2 | LM, LMV, LV | Metallic materials — Vickers hardness test — Part 2: Verification and calibration of testing machines |
| 6508-2 | LR, LCR | Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines |
» Metals
| Method | Instruments | Constituents | Materials |
| 3690 | DH603 | Hydrogen | Ferritic Steel Arc Weld Metal |
| 4689-2/3 | 844/744 Series | Sulfur | Iron Ores |
| 4935 | 844/744 Series | Sulfur | Steel and Iron |
| 7524 | 844/744 Series | Carbon | Nickel, Ferronickel, and Nickel Alloys |
| 7526 | 844/744 Series | Sulfur | Nickel, Ferronickel, and Nickel Alloys |
| 9556 | 844/744 Series | Carbon | Steel and Iron |
| 9686 | 844/744 Series | Carbon, Sulfur | Direct Reduced Iron |
| 9891 | 844/744 Series | Carbon | UO2 |
| 10694 | 844/744 Series | Carbon | Soil |
| 10719 | 844/744 Series | Carbon | Cast Irons |
| 10720 | 836/736 Series | Nitrogen | Steel and Iron |
| 11873 | 844/744 Series | Carbon, Sulfur | Cobalt Metal Powders |
| 13902 | 844/744 Series | Sulfur | Steel and Iron |
| 15349-2 | 844/744 Series | Carbon | Unalloyed Steel |
| 15350 | 844/744 Series | Carbon, Sulfur | Steel and Iron |
| 15351 | 836/736 Series | Nitrogen | Steel and Iron |
| 17053 | 836/736 Series | Steel and Iron | |
| 19272 | GDS | Carbon, Silicon, Manganese, Phosphorus, Sulfur, Chromium, Nickel, Aluminum, Titanium, and Copper | Low Alloyed Steel |
| 21614 | 844/744 Series | Carbon | Uranium Dioxide [UO2], Uranium-Gadolinium Mixed Oxides [(U, Gd)O2], and Uranium-Plutonium Mixed Oxides [(U, Pu)O2] |
| 22963 | 836/736 Series | Oxygen | Titanium and Titanium Alloys |
» Plastics
| Method | Instruments | Constituents | Materials |
| 3451-1 Method D |
TGA801 | Ash | Plastics |
» Soils
| Method | Instruments | Constituents | Materials |
| 10694 | 832 Series, 828/928 Series, 844/744 Series, 612 Series |
Carbon | Soil |
| 13878 | 828/928 Series | Nitrogen | Soil |
| 15178 | 928 Series, 832 Series |
Sulfur | Soil |
» Surface Chemical Analysis
| Method | Instruments | Constituents | Materials |
| 11505 | GDS | Multiple | General Procedures |
| 14707 | GDS | Multiple | Introduction to Use |
| 16962 | GDS | Zinc and Aluminum Coatings | Ferrous or Other Metal Base Materials |
| 25138 | GDS | Metal Oxide Films | Multiple Base Materials |
Ontario Ministry of the Environment
| Method | Instruments | Constituents | Materials |
| E3487 | QuadJet™ SD-ECD | Organochlorine Pesticides (OCs), Polychlorinated Biphenyls (PCBs) |
Soil, Sediment |
UOP (Universal Oil Products)
| Method | Instruments | Constituents | Materials |
| 703 | 844/744 Series | Carbon | Catalysts |
| 864 | 832 Series | Sulfur | Organic and Inorganic Materials |
| 990 | GCxGC FID | Molecular type classification | Petroleum Samples |